Скачать или смотреть What Does DTC P0442 Mean? Evaporative Emission System Leak Detected (Small Leak)

This video will help you determine the meaning of Diagnostic Trouble Code (or DTC)
P0442.
P0442: Evaporative Emission System Leak Detected (Small Leak)

Possible P0442 signs & symptoms:
Check engine light
Smell of fuel vapors

Possible P0442 causes:
Fuel cap: https://orly.cc/4566GU2
Fuel tank: https://orly.cc/46E7BNV
Fuel tank pressure sensor: https://orly.cc/40ZlyCa
Filler neck: https://orly.cc/4m2UABJ
Leak detection pump: https://orly.cc/4nZDhDm
Fuel tank sending unit gasket: https://orly.cc/4o0SSCD
Fuel tank sending unit seal
EVAP vent valve or purge valve: https://orly.cc/4f3XCn5
EVAP system hoses: https://orly.cc/4lB4g6D
Carbon canister: https://orly.cc/46UxUiF
Leaks at o-rings or clamps: https://orly.cc/40rAclE


Supplies Needed for This Job:
1. Safety Glasses: https://orly.cc/4e7cFKz
2. Gloves: https://orly.cc/3YKu3QZ

0:00 Welcome Back
0:30 Evaporative System Diagnostic
0:45 P0442 Possible Issues
1:00 P0442 Possible Symptoms
1:38 Additional Resources

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P0442 EVAP System Leak Diagnostic Code
How To Diagnose a Small Evaporative System Leak
DIY EVAP System Leak Power Code Repair


Hey everybody— Renée here from O’Reilly Auto Parts to talk to you about a common diagnostic trouble code, or DTC. Today, the code I’ll be talking about is P0442.
If you haven’t stopped by a store for a free O’Reilly Veriscan diagnostic test, it’s a simple way to get a full readout and recommendations that could help with diagnosis and repair.
Technically speaking, OBD-II fault code P0442 means “Evaporative Emission System Leak Detected”, and refers to a small leak.
In practical terms, this means the EVAP system of your vehicle—which is designed to capture, store and purge raw fuel vapors—has a small leak.
Possible causes for this code can include issues with your fuel cap, fuel tank, fuel tank pressure sensor or filler neck;
your leak detection pump, fuel tank sending unit gasket or seal;
EVAP vent valve or purge valve;
leaks at O-rings or clamps;
or small leaks in your EVAP system hoses or carbon canister.
In many cases, there may be no symptoms besides a Check Engine light, but you could notice the smell of fuel vapors.
You probably won’t notice issues with your vehicle’s performance, and it’s okay to drive if you must, but it’s important to have the issue diagnosed and repaired as soon as possible.
Since the cause of this code can vary from one vehicle to the next, we recommend starting with an O’Reilly VeriScan report. In some cases, checking to ensure your gas cap is in good repair and appropriately tightened is one of the best things you can do before having the issue diagnosed professionally. EVAP system leaks often require professional diagnostic equipment to locate the source of the leak.
We also have additional resources on our How-To Hub to help you diagnose these and other symptoms.
If you’re not sure where to start on this repair, we’d be happy to recommend a professional shop in your area to help you determine which of the possible issues have caused the code or codes, and what your course of action should be.